10.23 A newspaper article discussed the opening of a Whole Foods Market in the Time-Warner building in New York City. The following data (stored in the file Wholefoods1) compared the prices of some kitchen staples at the new Whole Foods Market and at the Fairway supermarket located about 15 blocks from the Time-Warner building: a. At the 0.01 level of significance, is there evidence that the mean price is higher at Whole Foods Market than at the Fairway supermarket? b. Interpret the meaning of the p-value in (a). WHOLEFOODS1 Item Whole Foods Fairway Half-gallon milk 2.19 1.35 Dozen eggs 2.39 1.69 Tropicana orange juice (64 oz.) 2.00 2.49 Head of Boston lettuce 1.98 1.29 Ground round 1lb. 4.99 3.69 Bumble Bee tuna 6 oz. can 1.79 1.33 Granny Smith apples (1 lb.) 1.69 1.49 Box DeCecco linguini 1.99 1.59 Salmon steak 1 lb. 7.99 5.99 Whole chicken per pound 2.19 1.49
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